Borrowings (Subsequent payments due on borrowings) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Debt Instrument [Line Items]
2013	$ 7,914	[1]
2014	100
Total debt	8,014		9,535
Equipment Term Loan [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Short-term Debt	2,236
Long-term borrowings	$ 2,200

[1] Contractually scheduled payments related to the Equipment Term Loan of $2.2 million were callable by the bank.