RELATED PARTY TRANSACTIONS (Details) $ in Thousands			1 Months Ended	3 Months Ended		6 Months Ended
	Aug. 28, 2015 USD ($) ft² a item	Sep. 30, 2004 USD ($)	Sep. 30, 2004 USD ($)	Jun. 30, 2018 USD ($) ft²	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) ft²	Jun. 30, 2017 USD ($)	Nov. 17, 2017 USD ($)
Driveway Lease
RELATED PARTY TRANSACTIONS
Operating expenses related to lease		$ 1,350
Biggest Little Investments, L.P. (BLI) | Parking Lot Lease
RELATED PARTY TRANSACTIONS
Number of parking spaces | item	300
Minimum annual rent								$ 695
Anniversary years subject to cost of living adjustment rent increases	5 years
Lease renewal option additional term	10 years
Amount due to related party if lease is not renewed	$ 1,600
Operating expenses related to lease				$ 1	$ 1	$ 9	$ 8
Lease rent paid				$ 174	174	$ 348	348
Biggest Little Investments, L.P. (BLI) | Driveway Lease
RELATED PARTY TRANSACTIONS
Lease term			15 years
Area of property | ft²				37,400		37,400
Minimum annual rent		300	$ 300
Anniversary years subject to cost of living adjustment rent increases			5 years
Number of terms for which the lease can be renewed | item	3
Lease renewal option additional term	5 years
Operating expenses related to lease		$ 2,000		$ 4	4	$ 9	11
Cost of improvements, useful life		15 years
Lease rent paid				94	94	188	188
Affiliates | Billboard advertising, storage space and parking lot space
RELATED PARTY TRANSACTIONS
Lease rent paid				$ 35	$ 33	$ 67	$ 60
Golden Road | Biggest Little Investments, L.P. (BLI) | Parking Lot Lease
RELATED PARTY TRANSACTIONS
Lease term	20 years
Golden Road | Biggest Little Investments, L.P. (BLI) | Parking Lot Lease | Buildings
RELATED PARTY TRANSACTIONS
Area of property | ft²	46,000
Area of land | a	4.2