CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets
Accounts receivable, allowance for doubtful accounts	$ 1,543	$ 1,340
Rental equipment net of accumulated depreciation	1,832,291	1,807,010
Rental equipment, accumulated depreciation	440,406	421,153
Net investment in direct finance leases	77,036	80,582
Intangible assets, accumulated amortization	3,350	2,681
Furniture, fixtures and equipment, accumulated depreciation	2,924	2,833
Current liabilities
Current portion of debt	85,204	95,527
Debt	$ 1,377,931	$ 1,380,499
Stockholders' equity
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	84,000,000	84,000,000
Common stock, shares issued	19,192,687	19,057,217
Common stock, shares outstanding	19,192,687	19,057,217
Variable Interest Entity, Primary Beneficiary [Member]
Current assets
Cash	$ 20,382	$ 30,449
Rental equipment net of accumulated depreciation	56,401	62,477
Net investment in direct finance leases	8,188	7,331
Current liabilities
Current portion of debt	19,504	30,980
Debt	$ 69,968	$ 74,887