Acquisitions (Purchase Price Allocation) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Cloverleaf Communications, Inc. [Member]	Jan. 26, 2010 Cloverleaf Communications, Inc. [Member]	Jan. 26, 2010 Cloverleaf Communications, Inc. [Member] Acquired software [Member]	Jan. 26, 2010 Cloverleaf Communications, Inc. [Member] Trade name [Member]
Business Acquisition [Line Items]
Cash				$ 78
Accounts receivable				55
Inventory				67
Other current assets				37
Property ad equipment				452
Other non-current assets				23
Amortizable intangible assets					6,375	181
Goodwill	0	0	4,100	4,140
Accounts payable				(269)
Current maturities of long-term loan				(775)
Accrued compensation				(401)
Accrued expenses				(172)
Accrued Cloverleaf transaction costs				(924)
Other non-current liabilities				(32)
Total				$ 8,835