Derivatives - Interest Rate Swap (Details) - USD ($)	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Dec. 19, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amount of Interest Rate Cash Flow Hedge Derivatives			$ 150,000,000
Derivative, Fixed Interest Rate			0.9825%
Quarterly reduction of notional amount	50.00%
Interest rate swap (liability)	$ (227,000)
Interest rate asset		$ 573,000
Accumulated other comprehensive income (loss), interest rate swap, tax benefit	$ (88,000)	$ 223,000