Derivative Financial Instruments (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Nov. 15, 2013
Credit Derivatives [Line Items]
Interest rate swap liability	$ 762,000	$ 1,511,000
Gain recognized in other comprehensive income	$ 430,000	$ 854,000
November 2013 Agreement [Member]
Credit Derivatives [Line Items]
Notional amount of interest rate swap			$ 160,000,000
Amount of current outstanding principal converted			$ 160,000,000
Fixed rate of derivative			5.384%
Derivative, basis spread on variable rate			3.50%