Accrued Restructuring - Restructuring Reserve Rollforward (Details) (USD $)	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Restructuring Cost and Reserve [Line Items]
Business Combination, Integration Related Costs	$ 0	$ 576,000
Restructuring Reserve, Noncurrent	600,000
Balance accrued as of December 31, 2012	1,188,000
Restructuring Charges	575,000
Restructuring Reserve, Accrual Adjustment	(58,000)
Expenditures	(507,000)
Balance accred as of March 31, 2013	1,198,000
Severance, Payroll Taxes and Other Employee Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Balance accrued as of December 31, 2012	198,000
Restructuring Charges	575,000
Restructuring Reserve, Accrual Adjustment	(58,000)
Expenditures	(415,000)
Balance accred as of March 31, 2013	300,000
Lease Abandonment Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance accrued as of December 31, 2012	990,000
Restructuring Charges	0
Restructuring Reserve, Accrual Adjustment	0
Expenditures	(92,000)
Balance accred as of March 31, 2013	$ 898,000

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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- Definition

Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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