Other Comprehensive Income (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Securities Available for Sale
Beginning balance	$ (1,955)	$ 1,041	$ 2,647
Unrealized gain (loss) on securities available for sale	(840)	(2,280)	(254)
Reclassification adjustment for net gains included in net income	(336)	(716)	(1,352)
Total unrealized gain (loss) on investment securities	(1,176)	(2,996)	(1,606)
Ending balance	(3,131)	(1,955)	1,041
Derivatives
Beginning balance	(426)	(850)
Unrealized gain (loss) on derivatives	2,794	(934)	(850)
Reclassification adjustment for amounts included in net income	(987)	1,358
Total unrealized gain (loss) on derivatives	1,807	424	(850)
Ending balance	1,381	(426)	(850)
Accumulated Other Comprehensive (Loss) Income
Beginning balance	(2,381)	191	2,647
Other comprehensive income (loss) before reclassifications	1,954	(3,214)	(1,104)
Amounts reclassified from accumulated other comprehensive income (loss)	(1,323)	642	(1,352)
Other comprehensive income (loss)	631	(2,572)	(2,456)
Ending balance	$ (1,750)	$ (2,381)	$ 191