XML 37 R11.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Marketable Securities | 6 Months Ended
--- | ---
Jun. 30, 2013
Marketable Securities |
Marketable Securities | (6) Marketable Securities A summary of marketable securities is shown below:
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |
|  | (In thousands) |
June 30, 2013 |  |  |  |  |  |  |  |  |
Marketable securities |  |  |  |  |  |  |  |  |
U.S. government and municipal obligations |  |  |  |  |  |  |  |  |
Maturing in one year or less |  | $ | 34,189 |  | $ | 15 |  | $ | 5 |  | $ | 34,199 |
Maturing after one year through three years |  | 34,030 |  | 61 |  | 22 |  | 34,069 |
Total U.S. government and municipal obligations |  | $ | 68,219 |  | $ | 76 |  | $ | 27 |  | $ | 68,268 |
Corporate debt securities |  |  |  |  |  |  |  |  |
Maturing in one year or less |  | $ | 33,336 |  | $ | 10 |  | $ | 32 |  | $ | 33,314 |
Maturing after one year through three years |  | 27,566 |  | — |  | 65 |  | 27,501 |
Total corporate debt securities |  | $ | 60,902 |  | $ | 10 |  | $ | 97 |  | $ | 60,815 |
Total marketable securities |  | $ | 129,121 |  | $ | 86 |  | $ | 124 |  | $ | 129,083 |
December 31, 2012 |  |  |  |  |  |  |  |  |
Marketable securities |  |  |  |  |  |  |  |  |
U.S. government and municipal obligations |  |  |  |  |  |  |  |  |
Maturing in one year or less |  | $ | 15,566 |  | $ | 28 |  | $ | — |  | $ | 15,594 |
Maturing after one year through three years |  | 19,797 |  | 99 |  | 1 |  | 19,895 |
Total U.S. government and municipal obligations |  | $ | 35,363 |  | $ | 127 |  | $ | 1 |  | $ | 35,489 |
Corporate debt securities |  |  |  |  |  |  |  |  |
Maturing in one year or less |  | $ | 17,353 |  | $ | 23 |  | $ | 4 |  | $ | 17,372 |
Maturing after one year through three years |  | 6,193 |  | 14 |  | 3 |  | 6,204 |
Total corporate debt securities |  | $ | 23,546 |  | $ | 37 |  | $ | 7 |  | $ | 23,576 |
Total marketable securities |  | $ | 58,909 |  | $ | 164 |  | $ | 8 |  | $ | 59,065 |
The marketable securities held by the Company were high investment grade and there were no marketable securities that the Company considered to be other-than-temporarily impaired as of June 30, 2013.

X
- Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 3, 19, 20, 21, 22, 137 -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 Accounting Standards Codification -Topic 320 -Glossary Debt Security -URI http://asc.fasb.org/extlink&oid=6509901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27405-111563 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Equity Security -URI http://asc.fasb.org/extlink&oid=6511694 + Details
Name: | us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration