Fair Value Measurements (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 0	$ 0
Accounts receivable	0	0
Accounts payable	0	0
Notes payable		0
Contingent consideration due to Ciprico		0
Accounts payable	23,045,000	31,434,000
Estimate of fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accounts receivable		31,697,000
Accounts payable		31,434,000
Notes payable		71,000
Contingent consideration due to Ciprico		100,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accounts receivable	0	0
Accounts payable		0
Notes payable		0
Contingent consideration due to Ciprico		0
Accounts payable	0
Fair value, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accounts receivable	27,085,000	31,697,000
Accounts payable	23,045,000	31,434,000
Notes payable		71,000
Contingent consideration due to Ciprico		100,000
Fair value, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accounts receivable	0	0
Accounts payable		0
Notes payable		0
Contingent consideration due to Ciprico		0
Accounts payable	0
Fair value, measurements, recurring | Estimate of fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	40,499,000	46,168,000
Fair value, measurements, recurring | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	40,499,000	46,168,000
Fair value, measurements, recurring | Fair value, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Fair value, measurements, recurring | Fair value, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 0	$ 0
Ciprico
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, percentage	6.67%