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Debt - Principal and Interest Payments on Debt (Detail)
$ in Thousands
Jun. 30, 2018
USD ($)
Debt Disclosure [Abstract]  
2019, Principal $ 7,857
2020, Principal 8,571
2021, Principal 8,572
2022, Principal 5,000
Total, Principal 30,000
2018, Interest 1,381
2019, Interest 2,453
2020, Interest 1,677
2021, Interest 885
2022, Interest 2,553
Total, Interest 8,949
2018, Total 1,381
2019, Total 10,310
2020, Total 10,248
2021, Total 9,457
2022, Total 7,553
Total $ 38,949