Income Taxes (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	$ 11,400,000
Gross deferred tax assets	77,208,000	70,716,000
Income Taxes (Textual) [Abstract]
Increase to income tax expense due to reduction in the deferred tax asset			1,300,000
Accrued interest and penalties for discontinued operations	418,000	386,000
Accrued interest and penalties for continued operations			146,000
Tax-related interest expense credits		146,000
Accrued gross liabilities	636,000	636,000
Liabilities associated with uncertain tax positions	1,100,000	1,000,000
State net operating loss carry forwards	82,000,000	91,900,000
Deferred tax assets, State	1,800,000	2,100,000
Valuation allowance related to the foreign tax credit carryforwards	13,400,000
Valuation allowance related to state net operating loss carryforwards	805,000
Valuation allowance	(14,576,000,000)	(356)
Incremental unrecognized tax liability	4,500,000
Tax deficiencies	(96,000)	325,000	524,000
General business credit	519,000
Unrecognized tax liability for undistributed foreign earnings	711,000
Aggregate tax benefit restricted stock and PBRS and the exercise of stock options vested	96,000
State and Local [Member]
Operating Loss Carryforwards [Line Items]
Tax benefits related to the favorable resolution of tax matters		103,000	514,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Foreign tax credit carryforward, expire on 2019	268,000
Foreign tax credit carryforward, expire on 2020	8,300,000
Foreign tax credit carryforward, expire on 2021	4,500,000
Foreign tax credit carryforward, expire on 2022	320,000
Tax credit carryforwards	13,400,000
Valuation allowance related to the foreign tax credit carryforwards	13,400,000
Period of tax credit	10 years
Expiration period	2019
Gross deferred tax assets	$ (990,000)