Annual report pursuant to Section 13 and 15(d)

Derivatives - Summary of Designated Derivative Instruments Classified as Derivative Assets (Details)

v3.8.0.1
Derivatives - Summary of Designated Derivative Instruments Classified as Derivative Assets (Details) - Interest rate swaps
$ in Thousands
Dec. 31, 2017
USD ($)
derivative_instrument
Interest rate swap contract one  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Quantity | derivative_instrument 2
Notional Amount $ 27,954
Fair Market Value $ 333
Interest rate swap contract one | Minimum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 1.27%
Interest rate swap contract one | Maximum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 2.37%
Interest rate swap contract two  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Quantity | derivative_instrument 10
Notional Amount $ 311,825
Fair Market Value $ (1,368)
Interest rate swap contract two | Minimum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 2.16%
Interest rate swap contract two | Maximum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 2.69%
Interest rate swap contract three  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Quantity | derivative_instrument 4
Notional Amount $ 124,776
Fair Market Value $ 1,184
Interest rate swap contract three | Minimum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 2.17%
Interest rate swap contract three | Maximum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 2.18%
Interest rate swap contract four  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Quantity | derivative_instrument 1
Hedge Interest Rates 2.57%
Notional Amount $ 67,013
Fair Market Value $ (534)
Interest rate swap contract five  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Quantity | derivative_instrument 1
Hedge Interest Rates 3.23%
Notional Amount $ 9,905
Fair Market Value $ (276)
Interest rate swap contract six  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Quantity | derivative_instrument 1
Hedge Interest Rates 2.60%
Notional Amount $ 33,409
Fair Market Value $ (346)
Interest rate swap contract seven  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Quantity | derivative_instrument 5
Notional Amount $ 144,379
Fair Market Value $ (1,465)
Interest rate swap contract seven | Minimum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 2.48%
Interest rate swap contract seven | Maximum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 3.04%
Interest rate swap contract eight  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Quantity | derivative_instrument 5
Notional Amount $ 143,490
Fair Market Value $ (1,848)
Interest rate swap contract eight | Minimum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 2.56%
Interest rate swap contract eight | Maximum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 2.95%
Interest rate swap contract nine  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Quantity | derivative_instrument 5
Notional Amount $ 182,267
Fair Market Value $ (2,331)
Interest rate swap contract nine | Minimum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 2.62%
Interest rate swap contract nine | Maximum  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Hedge Interest Rates 2.95%