Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of the year	$ 1,885	$ 2,408	$ 4,098
Acquired Balances	0	0	0
Charged to Expenses	3,785	1,937	1,386
Deductions	(1,332)	(2,460)	(3,076)
Balance at end of the year	4,338	1,885	2,408
Deferred Income Tax Asset Valuation Allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of the year	1,334	1,487	1,381
Additions	168	33	106
Charged to Expenses	168	0
Deductions	(289)	(186)	0
Balance at end of the year	$ 1,213	$ 1,334	$ 1,487