Short-term and Long-term Debt - Components of Long-term Debt (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Long-term debt consists of:
Less current portion	$ (234)	$ (41)
Long-term debt, less current portion	4,459	212
Long-term debt secured by leased building and land	4,693
Note payable to a bank
Long-term debt consists of:
Long-term debt	$ 4,693	$ 253