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Leases - Summary of unadjusted lease commitments (Detail) $ in Thousands	Dec. 31, 2018 USD ($)
Leases [Abstract]
2019	$ 1,253
2020	1,039
2021	1,052
2022	841
2023	618
Thereafter	261
Total operating leases	5,064
2019	78
2020	62
2021	30
2022	10
2023	0
Thereafter	0
Total finance leases	$ 180

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Amount of minimum lease payments for capital leases.

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Amount of minimum lease payments for capital leases due after 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.

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