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Debt - Principal and Interest Payments on Debt (Detail) $ in Thousands | Jun. 30, 2015 USD ($)
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Debt Instrument [Line Items] |  |
2015, Principal | [1] | $ 0
2016, Principal | [1] | 5,226
2017, Principal | [1] | 5,603
2018, Principal | [1] | 6,007
2019, Principal | [1] | 3,164
Total, Principal | [1] | 20,000
2015, Interest | [1] | 640
2016, Interest | [1] | 1,231
2017, Interest | [1] | 854
2018, Interest | [1] | 450
2019, Interest | [1] | 1,465
Total, Interest | [1] | 4,640
2015, Total | [1] | 640
2016, Total | [1] | 6,457
2017, Total | [1] | 6,457
2018, Total | [1] | 6,457
2019, Total | [1] | 4,629
Total | [1] | $ 24,640
[1] | Unless interest only period extends to December 31, 2016, as described below.

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- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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