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Investments and Fair Value Measurements | 9 Months Ended
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Sep. 30, 2013
Equity Method Investments Disclosure [Abstract] |
Fair Value Disclosures [Text Block] | Investments and Fair Value Measurements All of the Company’s short-term and long-term investment balances at September 30, 2013, $11.4 million at par, were invested in tax free, auction rate student ("ARS") loan educational bonds that are classified as available-for-sale and, therefore, are carried at fair value on the financial statements. As of September 30, 2013, all of the Company’s auction rate student loan bonds were associated with unsuccessful auctions. As of September 30, 2013 the Company had received call notices, at par, for $6.9 million which were received in October and November 2013. The investments, not including the calls received subsequent to September 30, 2013, consist of two holdings and have contractual maturities that currently range from June 1, 2034 to May 1, 2040. These securities, $4.6 million, at par, hold medium to high grade investment (A-AA+) ratings from recognized rating agencies. Since the first auction failures in February 2008 when the Company had approximately $198.5 million ARS at par, the Company has received approximately $193.9 million of calls, including calls received subsequent to September 30, 2013, from issuers, at par, plus accrued interest at the time of the call. There were $0.1 million and $9.9 million in calls, at par, during the three and nine months ended September 30, 2013. The fair value of available-for-sale investments at September 30, 2013 and December 31, 2012 were as follows:
|  |  |  | Gross |  | Gross |  |
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair
|  | Cost |  | Gains |  | Losses |  | Value
|  | ( in thousands)
September 30, 2013 |  |
Current |  |  |  |  |  |  |  |
Auction rate student loan educational bonds |  | $ | 6,850 |  |  | — |  |  | $ | — |  |  | $ | 6,850 |
Long-term: |  |  |  |  |  |  |  |  |  |  |  |
Auction rate student loan educational bonds |  | $ | 4,575 |  |  | $ | — |  |  | $ | 230 |  |  | $ | 4,345 |
|  | $ | 11,425 |  |  | $ | — |  |  | $ | 230 |  |  | $ | 11,195 |
December 31, 2012 |  |  |  |  |  |  |  |
Long-term: |  |  |  |  |  |  |  |  |  |  |  |
Auction rate student loan educational bonds |  | $ | 21,300 |  |  | $ | — |  |  | $ | 1,284 |  |  | $ | 20,016 |
The contractual maturities and announced calls of available-for-sale securities at September 30, 2013 are detailed in the table below. As management receives intents to call from issuers, the associated securities are changed from their contractual maturities to the date received in the respective call notice.
|  | Fair Value |  | Amortized Cost
|  | (in thousands)
Due within one year |  | $ | 6,850 |  |  | $ | 6,850 |
Due after one year through five years |  | — |  |  | — |
Due after five years through ten years |  | — |  |  | — |
Due after ten years through May 1, 2040 |  | 4,345 |  |  | 4,575 |
|  | $ | 11,195 |  |  | $ | 11,425 |
The unrealized loss of $0.2 million is recorded as an adjustment to accumulated other comprehensive loss and the Company has not recognized any other than temporary impairments in the consolidated statements of comprehensive income. During the three and nine month periods ended September 30, 2013 the Company recorded unrealized gains of $0.5 million and $1.1 million, respectively, due to the reversal of prior period recorded unrealized losses as the Company has received $9.9 million in calls, at par, during the nine months ended September 30, 2013 and another $6.9 million subsequent to September 30, 2013. There were no other changes in other comprehensive income for the three and nine months ended September 30, 2013 and the unrealized losses on available-for-sale securities of $0.2 million is the only component of accumulated other comprehensive loss at September 30, 2013. There were no realized gains or losses related to these investments for the three and nine months ended September 30, 2013 and 2012. The table below presents a rollforward for all assets and liabilities, measured at fair value, on a recurring basis using significant unobservable inputs (Level 3) during the nine months ended September 30, 2013 and 2012.
|  | Available-for-sale debt securities
|  | (in thousands)
|  | 2013 |  | 2012
Balance, January 1 |  | $ | 20,016 |  |  | $ | 50,569 |
Settlements |  | (9,875 | ) |  | (31,325 | )
Purchases |  | — |  |  | — |
Issuances |  | — |  |  | — |
Sales |  | — |  |  | — |
Transfers in to (out of) Level 3 |  | — |  |  | — |
Total gains or losses (realized/unrealized): |  |  |  |  |
Included in earnings |  | — |  |  | — |
Included in other comprehensive income, net of tax |  | 1,054 |  |  | 1,797 |
Balance, September 30, |  | $ | 11,195 |  |  | $ | 21,041 |
Municipal bonds of $1.4 million at September 30, 2013 and $1.3 million at December 31, 2012 are stated at amortized cost, are classified as held-to-maturity and are included in restricted cash in other non-current assets. Differences between amortized cost and fair value of municipal bonds are not considered material.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15A -Subparagraph a-d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15C, 15D -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 3, 10, 14, 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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