Line of Credit and Notes Payable (Details) (USD $)	19 Months Ended						6 Months Ended		1 Months Ended		6 Months Ended		1 Months Ended				1 Months Ended
	Jun. 30, 2014 item	Dec. 31, 2013	May 31, 2013	Dec. 31, 2012 acre	Jun. 30, 2014 Notes payable - current	Jun. 30, 2014 Notes payable and other long-term liabilities	Jun. 30, 2014 Asset-based revolving credit facility item	Jun. 30, 2014 Term note	Jun. 30, 2011 Credit agreement	Jun. 30, 2014 Credit agreement	Jun. 30, 2014 Credit agreement Prime rate	Jun. 30, 2014 Credit agreement LIBOR	May 31, 2013 Subline under revolving credit facility	Jul. 31, 2013 Loan agreement to finance build out of new data center	Jun. 30, 2014 Loan agreement to finance build out of new data center	Jul. 31, 2013 Loan agreement to finance build out of new data center Maximum	Jul. 31, 2013 Loan agreement to finance build out of new data center Prime rate	Jul. 31, 2013 Loan agreement to finance build out of new data center LIBOR	Jun. 30, 2014 Notes payable
Line of Credit and Notes Payable
Credit limit							$ 200,000,000
Unused line fee (as a percent)							0.25%
Fixed charge coverage ratio							1.0
Number of trailing fiscal quarters used in calculating the fixed charge coverage ratio under debt covenants							4
Net working capital advances outstanding	52,652,000	110,499,000					52,700,000
Maximum credit line							200,000,000
Amount available to borrow for working capital advances							53,400,000
Principal balance of debt								4,340,000								7,725,000
Principal repayment amortization period								84 months	25 years				84 months	25 years
Outstanding amount of debt								3,600,000							4,300,000
Maturities of remaining balance of term note
Remainder of 2014								300,000		200,000
2015								600,000		400,000
2016								600,000		8,500,000
2017								600,000
2018								600,000
Thereafter								800,000
Additional disclosures
Purchase price of real property			3,000,000	1,100,000
Real property purchase amount financed													1,700,000
Monthly principal amortization amount													24,000
Real property loan					300,000	1,400,000
Borrowing term									5 years					5 years
Variable interest rate basis											Prime	LIBOR					Prime	LIBOR
Percentage points added to the reference rate											0.375%	2.375%					0.25%	2.25%
Amount outstanding under credit agreement										9,100,000
Area of land purchased				7.9
Additional costs incurred for construction of a new cloud data center	$ 9,300,000
Number of existing data centers	2
Effective weighted average annual interest rate (as a percent)							2.10%	2.10%											2.10%