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Debt - Principal and Interest Payments on Debt (Detail)
$ in Thousands
Mar. 31, 2016
USD ($)
 [1]
Debt Instrument [Line Items]  
2016, Principal $ 3,050
2017, Principal 6,428
2018, Principal 6,892
2019, Principal 3,630
Total, Principal 20,000
2016, Interest 1,003
2017, Interest 980
2018, Interest 517
2019, Interest 1,474
Total, Interest 3,974
2016, Total 4,053
2017, Total 7,408
2018, Total 7,409
2019, Total 5,104
Total $ 23,974
[1] Unless interest only period extends to December 31, 2016, as described below.