Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Other Liabilities
Interest rate swap liability	$ 5,181	$ 2,905
Other	136	84
Other liabilities	15,647	13,251
Pension plan
Other Liabilities
Pension and supplemental executive retirement plan liability	2,338	2,263
SERP
Other Liabilities
Pension and supplemental executive retirement plan liability	$ 7,992	$ 7,999