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Note 6. Credit Facilities and Capital Leases (Detail) (USD $) | 1 Months Ended | 3 Months Ended | 7 Months Ended | 12 Months Ended |  | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended |  | 0 Months Ended | 1 Months Ended |  |  | 1 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 31, 2009 | Jun. 30, 2009 | Feb. 28, 2009 | Dec. 31, 2008 | Dec. 31, 2009 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2008 | Dec. 31, 2011 | Dec. 31, 2011 Term Facility [Member] | Dec. 31, 2011 General Corporate [Member] | Feb. 28, 2009 Exerice Of Over-Allotment Option [Member] | Dec. 31, 2011 Leverage Ratio [Member] | Oct. 31, 2009 Convertible Preferred Stock [Member] | Jul. 31, 2009 Convertible Preferred Stock [Member] | Feb. 28, 2009 Convertible Preferred Stock [Member] | Dec. 31, 2011 Interest Coverage Ratio [Member] | Dec. 31, 2011 Current Ratio [Member] | Dec. 31, 2011 Tangible Net Worth [Member] | Jun. 30, 2009 Private Placement Issuance [Member] | Jun. 30, 2009 Series 4 [Member] | Jun. 30, 2009 Term Facility [Member] | Feb. 28, 2009 Term Facility [Member] | Sep. 30, 2008 Term Facility [Member] | Dec. 31, 2010 Term Facility [Member] | Oct. 16, 2008 Bridge Facility [Member] | Feb. 28, 2009 Bridge Facility [Member] | Dec. 31, 2010 Bridge Facility [Member] | Dec. 31, 2011 Senior Secured Revolving Credit Facility [Member] | Dec. 31, 2011 Bridge Facility [Member] | Jun. 30, 2009 Prepayment Of Term Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  | $ 380,000,000 | $ 140,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 | $ 240,000,000 |
Line of Credit Facility, Amount Outstanding |  |  |  |  |  |  |  |  | 220,000,000 |  | 20,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,300,000 | 40,000,000 |  | 40,000,000 |  |  |
Repayments of Long-term Lines of Credit | 38,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 57,200,000 | 8,000,000 | 18,300,000 |  | 37,100,000 | 40,000,000 |  |  |  | 18,200,000
Proceeds from Issuance of Common Stock |  |  | 65,600,000 | 162,900,000 |  |  | 128,334,000 |  |  |  |  | 9,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in Shares) |  |  | 32,000,000 | 34,400,000 | 17,391,302 |  |  | 10,200,000 |  |  |  | 4,800,000 |  |  |  | 42,621 |  |  |  | 17,400,000 |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Current Maturities |  |  |  |  | 66,700,000 |  | 66,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Stock and Warrants for Services or Claims |  |  |  |  |  |  | 4,262,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,200,000 |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity |  | 60,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 9.38% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Expense, Debt |  |  | 2,300,000 |  |  | 600,000 | 11,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Deferred Loan Origination Fees, Net |  |  |  |  |  |  | 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Type of Interest Rate Paid on Swap |  |  |  |  |  |  | $2.7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, New Issues (in Dollars) |  |  |  |  | 43,393,000 |  |  |  |  |  |  |  |  |  |  | 4,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities (in Shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 28,921 | 13,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Deferred Charges |  |  |  |  |  | 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant Description |  |  |  |  |  |  |  |  |  |  |  |  | Leverage ratio (calculated as total debt divided by EBITDA) of not more than 3.0:1. |  |  |  | Interest coverage ratio (calculated as EBITDA divided by interest expense) of not less than 3.0:1. | Current ratio (calculated as current assets divided by current liabilities) of not less than 1.10:1. | Tangible net worth of greater than $500 million. |  |  |  |  |  |  |  |  |  |  |  |
Capital Leases Including Purchase Option |  |  |  |  |  |  |  |  | 10,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Lease Obligations, Current |  |  |  |  |  | 2,481,000 |  |  | 4,005,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Lease Obligations, Noncurrent |  |  |  |  |  | 3,792,000 |  |  | 6,265,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Lease Obligations |  |  |  |  |  | $ 6,300,000 |  |  | $ 10,062,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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