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Leases - Schedule of Future Lease Payment Under Operating Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 02, 2019	Dec. 31, 2018
Leases [Abstract]
Remainder of 2019	$ 681
2020	930
2021	809
2022	824
2023	843
Thereafter	5,304
Total minimum lease payments	9,391
Less: amount representing interest payments	(2,797)
Total operating lease liabilities	6,594	$ 6,712
Less: current portion, operating lease liabilities	511
Operating lease liabilities, net of current portion	$ 6,083

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due 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.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year 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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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the remainder of the 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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