Supplemental Comprehensive Income Disclosures (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			$ (2,386)	$ (4,499)
Other comprehensive income (loss) before reclassification adjustment	$ (489)	$ 4,123	8,528	8,133
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(686)	978	675	1,412
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			9,203	9,545
Amounts reclassified from accumulated other comprehensive income (loss)			(55)	(85)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	10	0	37	4
Total other comprehensive (loss) income	(1,185)	5,101	9,148	9,460
Accumulated Other Comprehensive Income (Loss), Ending Balance	6,762	4,961	6,762	4,961
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			(2,956)	(4,875)
Other comprehensive income (loss) before reclassification adjustment			8,528	8,133
Amounts reclassified from accumulated other comprehensive income (loss)			(18)	(81)
Total other comprehensive (loss) income			8,510	8,052
Accumulated Other Comprehensive Income (Loss), Ending Balance	5,554	3,177	5,554	3,177
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			10	76
Other comprehensive income (loss) before reclassification adjustment			0	0
Amounts reclassified from accumulated other comprehensive income (loss)			0	0
Total other comprehensive (loss) income			0	0
Accumulated Other Comprehensive Income (Loss), Ending Balance	10	76	10	76
Derivative [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			560	300
Total other comprehensive (loss) income			638	1,408
Accumulated Other Comprehensive Income (Loss), Ending Balance	$ 1,198	$ 1,708	1,198	1,708
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income			$ 9,148	$ 9,460