Accrued Liabilities

The following table summarizes the Company’s current accrued liabilities at December 31, 2013 and 2012 (in thousands).



	December 31,
	2013		2012
Accrued evaluated and unproved and unevaluated property costs	$	52,605	$	45,592
Accrued support equipment and facilities costs	—		1,382
Accrued stock-based compensation	56		65
Accrued lease operating expenses	6,251		5,218
Accrued interest on borrowings under Credit Agreement	141		255
Accrued asset retirement obligations	175		660
Accrued partners’ share of joint interest charges	1,173		3,597
Other	3,586		2,410
Total accrued liabilities	$	63,987	$	59,179

Supplemental Cash Flow Information

The following table provides supplemental disclosures of cash flow information for the years ended December 31, 2013, 2012 and 2011 (in thousands).



	Year Ended December 31,
	2013		2012			2011
Cash paid for interest expense, net of amounts capitalized	$	5,801	$	780		$	634
Asset retirement obligations related to mineral properties	1,363		1,195			488
Asset retirement obligations related to support equipment and facilities	3		49			12
Increase in liabilities for oil and natural gas properties capital expenditures	7,548		24,847			1,864
Increase in liabilities for support equipment and facilities	660		1,112			175
Issuance of restricted stock units for Board and advisor services	274		73			—
Issuance of common stock for Board and advisor services	57		71			230
(Decrease) increase in liabilities for accrued cost to issue equity	—		(332		)	(27		)
Stock-based compensation expense recognized as liability	1,012		(1,092		)	2,102
Transfer of inventory to oil and natural gas properties	343		69			96