Schedule II (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Beginning Balance	$ 1,329	$ 727	$ 908
Valuation Allowances and Reserves, Charged to Cost and Expense	244	741	63
Valuation Allowances and Reserves, Period Increase (Decrease)	(67)	(57)	(118)
Valuation Allowances and Reserves, Deductions	849	82	126
Valuation Allowances and Reserves, Ending Balance	657	1,329	727
Allowance for Trade Receivables [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Beginning Balance	722	443	497
Valuation Allowances and Reserves, Charged to Cost and Expense	195	316	63
Valuation Allowances and Reserves, Period Increase (Decrease)	(67)	(57)	(96)
Valuation Allowances and Reserves, Deductions	360	(20)	21
Valuation Allowances and Reserves, Ending Balance	490	722	443
Allowance for Loan and Lease Losses [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Beginning Balance	607	284	411
Valuation Allowances and Reserves, Charged to Cost and Expense	49	425	0
Valuation Allowances and Reserves, Period Increase (Decrease)	0	0	(22)
Valuation Allowances and Reserves, Deductions	489	102	105
Valuation Allowances and Reserves, Ending Balance	$ 167	$ 607	$ 284