Accumulated Other Comprehensive Income (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (816)
Other comprehensive income (loss), before reclassifications	(1,759)
Amounts reclassified from accumulated other comprehensive income (loss)	1,005
Net current-period other comprehensive income (loss)	(754)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(1,570)
Unrealized gains on available-for-sale securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	244
Other comprehensive income (loss), before reclassifications	(40)
Amounts reclassified from accumulated other comprehensive income (loss)	(48)
Net current-period other comprehensive income (loss)	(88)
Accumulated Other Comprehensive Income (Loss), Net of Tax	156
Designated derivatives fair value adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(1,060)
Other comprehensive income (loss), before reclassifications	(1,719)
Amounts reclassified from accumulated other comprehensive income (loss)	1,053
Net current-period other comprehensive income (loss)	(666)
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (1,726)