Line of Credit and Long-Term Debt - Components of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Long-term debt consists of:
Total short-term and long-term debt	$ 64,908	$ 65,915
Less: line-of-credit and current maturities of long-term debt	(4,048)	(4,018)
Less: deferred loan costs	(111)	(117)
Long-term debt, less current portion	60,749	61,780
Notes payable
Long-term debt consists of:
Total short-term and long-term debt	64,908	65,901
Other borrowings
Long-term debt consists of:
Total short-term and long-term debt	$ 0	$ 14