Line of Credit and Note Payable (Details) (USD $)	9 Months Ended	12 Months Ended	1 Months Ended
	Sep. 30, 2014	Dec. 31, 2014 item	Jun. 30, 2011	May 31, 2013	Jul. 31, 2013	Dec. 31, 2013 acre	Mar. 22, 2013
Line of Credit and Notes Payable
Net working capital advances outstanding		$ 52,795,000				$ 110,499,000
Additional disclosures
Purchase price of real property				3,000,000		1,100,000
Area of land purchased						7.9
Additional costs incurred for construction of a new cloud data center	12,200,000
Number of existing data centers		2
Asset-based revolving credit facility
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		52,800,000
Amount available to borrow for working capital advances		89,500,000
Additional disclosures
Effective weighted average annual interest rate (as a percent)		2.31%
Term note
Line of Credit and Notes Payable
Principal balance of debt							4,340,000
Equal monthly principal installments		52,000
Principal repayment amortization period		84 months
Outstanding amount of debt		3,300,000
Maturities of remaining balance of term note
2015		600,000
2016		600,000
2017		600,000
2018		600,000
2019		600,000
Thereafter		200,000
Additional disclosures
Effective weighted average annual interest rate (as a percent)		2.31%
Credit agreement
Line of Credit and Notes Payable
Principal repayment amortization period			25 years
Maturities of remaining balance of term note
2015		400,000
2016		8,500,000
Additional disclosures
Borrowing term			5 years
Amount outstanding under credit agreement		8,900,000
Credit agreement | Prime rate
Additional disclosures
Variable interest rate basis		Prime
Percentage points added to the reference rate		0.375%
Credit agreement | LIBOR
Additional disclosures
Variable interest rate basis		LIBOR
Percentage points added to the reference rate		2.375%
Subline under revolving credit facility
Line of Credit and Notes Payable
Principal repayment amortization period				84 months
Maturities of remaining balance of term note
2015		300,000
2016		300,000
2017		300,000
2018		300,000
2019		300,000
Thereafter		100,000
Additional disclosures
Real property purchase amount financed				1,700,000
Monthly principal amortization amount				24,000
Amount outstanding under credit agreement		1,600,000
Financing Arrangements For ERP Upgrage
Line of Credit and Notes Payable
Number of financing arrangements entered		3
Principal balance of debt		5,600,000
Outstanding amount of debt		4,500,000
Maturities of remaining balance of term note
2015		2,000,000
2016		2,000,000
2017		500,000
Loan agreement to finance build out of new data center
Line of Credit and Notes Payable
Principal repayment amortization period					25 years
Maturities of remaining balance of term note
2015		300,000
2016		300,000
2017		300,000
2018		300,000
2019		300,000
Thereafter		6,200,000
Additional disclosures
Borrowing term					5 years
Amount outstanding under credit agreement		7,725,000
Loan agreement to finance build out of new data center | Maximum
Line of Credit and Notes Payable
Principal balance of debt					7,725,000
Loan agreement to finance build out of new data center | Prime rate
Additional disclosures
Variable interest rate basis					prime
Percentage points added to the reference rate					0.25%
Loan agreement to finance build out of new data center | LIBOR
Additional disclosures
Variable interest rate basis					LIBOR
Percentage points added to the reference rate					2.25%
Notes payable
Additional disclosures
Effective weighted average annual interest rate (as a percent)		2.31%