Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Interest rate swap liability	$ 1,865	$ 2,905
Other	223	84
Other liabilities	13,034	13,251
Pension plan
Pension and supplemental executive retirement plan liability	2,931	2,263
SERP
Pension and supplemental executive retirement plan liability	$ 8,015	$ 7,999