Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 38,070	$ 33,033
Accounts receivable, net of allowance for doubtful accounts of $5,461 in 2015 and $4,055 in 2014	73,208	62,503
Deferred income taxes	6,496	16,834
Prepaid expenses	13,463	12,527
Other receivables	3,206	5,686
Total current assets	134,443	130,583
Equipment, at cost	883,804	827,638
Less accumulated depreciation	(688,479)	(678,291)
Equipment, net	195,325	149,347
Goodwill	102,782	63,864
Other intangible assets, net	162,923	115,930
Deferred financing costs, net	6,594	8,119
Other assets	32,820	33,042
Total assets	634,887	500,885
Current liabilities:
Accounts payable	20,796	12,109
Accrued compensation and related expenses	19,933	19,808
Accrued interest payable	3,323	3,154
Current portion of long-term debt	17,732	11,160
Current portion of obligations under capital leases	2,674	4,352
Other accrued liabilities	36,453	26,542
Total current liabilities	100,911	77,125
Long-term debt, net of current portion	546,947	485,701
Obligations under capital leases, net of current portion	10,332	6,076
Deferred income taxes	36,609	36,840
Other liabilities	6,664	6,623
Total liabilities	$ 701,463	$ 612,365
Commitments and contingencies (Note 12)
Stockholders’ deficit:
Preferred stock, $0.01 par value; 1,000,000 shares authorized and no shares issued and outstanding
Common stock, $0.01 par value; 100,000,000 shares authorized; 10,774,857 and 10,713,658 issued in 2015 and 2014, respectively; 10,616,884 and 10,555,685 outstanding in 2015 and 2014, respectively	$ 108	$ 107
Treasury stock, at cost - 157,973 shares in 2015 and 2014	(3,138)	(3,138)
Additional paid-in capital	29,297	27,653
Accumulated comprehensive loss	(511)	(351)
Accumulated deficit	(187,349)	(194,091)
Total stockholders’ deficit attributable to Alliance HealthCare Services, Inc.	(161,593)	(169,820)
Noncontrolling interest	95,017	58,340
Total stockholders’ deficit	(66,576)	(111,480)
Total liabilities and stockholders’ deficit	$ 634,887	$ 500,885