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Lease Obligations - Summary of lease related costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Lease cost:
Amortization of right-of-use assets	$ 186	$ 247	$ 375	$ 497
Interest on lease liabilities	1	9	3	20
Operating lease cost	2,469	2,296	4,955	4,563
Variable lease costs	78	76	156	153
Total lease cost	$ 2,734	$ 2,628	$ 5,489	$ 5,233

X

- Definition

Amount of interest expense on finance lease liability.

+ References

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X

- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

+ References

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-Publisher FASB
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X

- Definition

Amount of lease cost recognized by lessee for lease contract.

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- References

No definition available.

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X

- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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X

- Definition

Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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