Long-Term Debt (Schedule of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Long-term debt current and noncurrent	$ 88,057	$ 89,796
Less: current portion of long-term debt	3,000	3,000
Long-term debt	85,057	86,796
Term loan [Member]
Debt Instrument [Line Items]
Long-term debt current and noncurrent	17,750	18,500
Revolving credit facility [Member]
Debt Instrument [Line Items]
Long-term debt current and noncurrent	49,350	49,350
Convertible notes [Member]
Debt Instrument [Line Items]
Long-term debt current and noncurrent	20,000	20,000
Swing loan credit facility [Member]
Debt Instrument [Line Items]
Long-term debt current and noncurrent	$ 957	$ 1,946