Commitments and Contingencies (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Summary of restructuring activity and the status of the reserves
Accrual Balance, Beginning Balance	$ 1
Restructuring Expense	101
Cash Payments	(25)
Accrual Balance, Ending Balance	77
2013 Restructuring Plans Telworx integration [Member]
Summary of restructuring activity and the status of the reserves
Accrual Balance, Beginning Balance	0
Restructuring Expense	101
Cash Payments	(24)
Accrual Balance, Ending Balance	77
2012 Restructuring Plans Bloomingdale manufacturing [Member]
Summary of restructuring activity and the status of the reserves
Accrual Balance, Beginning Balance	1
Restructuring Expense	0
Cash Payments	(1)
Accrual Balance, Ending Balance	$ 0