Derivative and Hedging - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)
AOCI Attributable to Parent, Before Tax [Roll Forward]
Balance as of December 31, 2016	$ 11,223
Balance as of December 31, 2017	13,187
AOCI Attributable to Parent, Tax [Roll Forward]
Balance as of December 31, 2016	(4,435)
Balance as of December 31, 2017	(4,957)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance as of December 31, 2016	6,788
Balance as of December 31, 2017	8,230
Gains on Cash Flow Hedges [Member]
AOCI Attributable to Parent, Before Tax [Roll Forward]
Net change in unrealized gain (loss)	2,390
Amounts reclassified from accumulated other comprehensive income (loss) to interest expense	(426)
Net current period other comprehensive income (loss)	1,964
AOCI Attributable to Parent, Tax [Roll Forward]
Net change in unrealized gain (loss)	(636)
Amounts reclassified from accumulated other comprehensive income (loss) to interest expense	114
Net current period other comprehensive income (loss)	(522)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net change in unrealized gain (loss)	1,754
Amounts reclassified from accumulated other comprehensive income (loss) to interest expense	(312)
Net current period other comprehensive income (loss)	$ 1,442