CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current assets
Accounts receivable, allowance for doubtful accounts	$ 8,171	$ 2,042
Rental equipment net of accumulated depreciation	1,820,735	1,816,794
Rental equipment, accumulated depreciation	588,815	557,559
Net investment in direct finance leases	495,488	473,792
Intangible assets, accumulated amortization	5,221	3,611
Current liabilities
Current portion of debt	218,094	311,381
Debt	$ 1,880,122	$ 1,847,633
Stockholders' equity
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	84,000,000	84,000,000
Common stock, shares issued	17,479,127	18,764,459
Common stock, shares outstanding	17,479,127	18,764,459
Variable Interest Entity, Primary Beneficiary [Member]
Current assets
Cash	$ 26,594	$ 25,211
Rental equipment net of accumulated depreciation	101,907	71,958
Net investment in direct finance leases	4,790	13,862
Current liabilities
Current portion of debt	26,931	41,066
Debt	$ 100,849	$ 67,615
Series A Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Stock [Member]
Stockholders' equity
Preferred stock, dividend rate	8.50%	8.50%
Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Stock [Member]
Stockholders' equity
Preferred stock, dividend rate	8.50%	8.50%