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Commitments and Contingencies - Letters of Credit (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Other Commitments [Line Items] |  |
LOC Outstanding | $ 12,034 | $ 11,625
Restricted cash | 727 | 2,527
Restricted cash, long-term | 10,980 | 8,771
Investment securities, restricted, long-term | 336 | 336
Contract performance - equipment systems |  |
Other Commitments [Line Items] |  |
LOC Outstanding | 5,556 | 7,247
Restricted cash | 727 | 2,527
Restricted cash, long-term | 4,830 | 4,721
Investment securities, restricted, long-term | 0 | 0
Royalty Award |  |
Other Commitments [Line Items] |  |
LOC Outstanding | 6,150 | 4,050
Restricted cash | 0 | 0
Restricted cash, long-term | 6,150 | 4,050
Investment securities, restricted, long-term | 0 | 0
Other |  |
Other Commitments [Line Items] |  |
LOC Outstanding | 328 | 328
Restricted cash | 0 | 0
Restricted cash, long-term | 0 | 0
Investment securities, restricted, long-term | $ 336 | $ 336

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- Definition Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale which are intended to be held for greater than one year or the normal operating cycle, whichever is longer and that are pledged to one or more secured parties who have the right to buy, sell, or re-pledge the collateral. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 6 -Article 9 + Details
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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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