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Leases, Maturities of Lease Commitments (Details) - USD ($)	Sep. 30, 2020	Mar. 31, 2020
Operating Leases [Abstract]
2021 - remaining six months	$ 5,521,000
2022	10,348,000
2023	9,269,000
2024	8,102,000
2025	8,095,000
Thereafter	69,261,000
Total lease payments	110,596,000
Less amount representing interest	(31,409,000)
Present value of lease liabilities	79,187,000
Finance Leases [Abstract]
2021 - remaining six months	1,310,000
2022	2,438,000
2023	1,800,000
2024	1,026,000
2025	618,000
Thereafter	87,000
Total lease payments	7,279,000
Less amount representing interest	(647,000)
Present value of lease liabilities	6,632,000
Total [Abstract]
2021 - remaining six months	6,831,000
2022	12,786,000
2023	11,069,000
2024	9,128,000
2025	8,713,000
Thereafter	69,348,000
Total lease payments	117,875,000
Less amount representing interest	(32,056,000)
Present value of lease liabilities	$ 85,819,000	$ 72,493,000

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