Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 6,416	$ 5,522	$ 15,500	$ 16,689
Net change in fair value of interest rate swap agreements designated as cash flow hedges:
Unrealized gain (loss) on interest rate swaps, net of tax of ($17) and $44 for the three months ended September 30, 2016 and 2015, and $42 and $86 for the nine months ended September 30, 2016 and 2015	32	(81)	(77)	(160)
Reclassification adjustment for losses recognized in earnings, net of tax of ($29) and ($33) for the three months ended September 30, 2016 and 2015, and ($91) and ($99) for the nine months ended September 30, 2016 and 2015	55	62	169	185
Net change in fair value of interest rate swap agreements designated as cash flow hedges	87	(19)	92	25
Unrealized gains (losses) on other-than-temporarily impaired securities available for sale:
Unrealized gains (losses) arising during the period, net of tax of $0 and $0 for the three months ended September 30, 2016 and 2015, and $276 and ($90) for the nine months ended September 30, 2016 and 2015	0	0	(513)	165
Reclassification adjustment for realized gains included in net income, net of tax of $0 and $0 for the three months ended September 30, 2016 and 2015, and $323 and $0 for the nine months ended September 30, 2016 and 2015	0	0	(599)
Unrealized gains (losses) on other-than-temporarily impaired securities available for sale net of reclassification adjustment for realized gains (losses) included in net income	0	0	(1,112)	165
Unrealized gains on other securities available for sale:
Unrealized gains arising during the period, net of tax of ($103) and ($2,059) for the three months ended September 30, 2016 and 2015, and ($3,039) and ($1,221) for the nine months ended September 30, 2016 and 2015	187	3,822	5,641	2,268
Reclassification adjustment for realized gains included in net income, net of tax of $0 and $26 for the three months ended September 30, 2016 and 2015, and $29 and $197 for the nine months ended September 30, 2016 and 2015	0	(47)	(54)	(367)
Unrealized losses on other securities available for sale net of reclassification adjustment for realized gains included in net income	187	3,775	5,587	1,901
Other comprehensive income	274	3,756	4,567	2,091
COMPREHENSIVE INCOME	$ 6,690	$ 9,278	$ 20,067	$ 18,780