The calculation of net income per unit is as follows (in thousands, except unit and per unit amounts):



	Year Ended December 31,
	2012			2011
Net income attributable to partners	$	56,791		$	34,568
Less: General partner's distributions (including IDRs) (a)	2,839			597
Less: Limited partners' distributions on common units	35,666			14,603
Less: Limited partner's distributions on subordinated units	26,162			14,603
Distributions less than (greater than) earnings	$	(7,876	)	$	4,765

General partner's earnings:
Distributions (including IDRs) (a)	$	2,839		$	597
Allocation of distributions less than (greater than) earnings	(155		)	95
Total general partner's earnings	$	2,684		$	692

Limited partners' earnings on common units:
Distributions	$	35,666		$	14,603
Allocation of distributions less than (greater than) earnings	(4,025		)	2,335
Total limited partners' earnings on common units	$	31,641		$	16,938

Limited partner's earnings on subordinated units:
Distributions	$	26,162		$	14,603
Allocation of distributions less than (greater than) earnings	(3,696		)	2,335
Total limited partner's earnings on subordinated units	$	22,466		$	16,938

Weighted average limited partner units outstanding:
Common units - basic	16,614,668			15,254,890
Common unit equivalents	94,282			27,476
Common units - diluted	16,708,950			15,282,366

Subordinated units - basic and diluted	15,254,890			15,254,890

Net income per limited partner unit:
Common - basic	$	1.90		$	1.11
Common - diluted	$	1.89		$	1.11
Subordinated - basic and diluted	$	1.47		$	1.11

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(a) General partner's distributions (including IDRs) consist of the 2% general partner interest and IDRs, which entitle the general partner to receive increasing percentages, up to 50%, of quarterly distributions in excess of $0.388125 per unit per quarter. See Note L for further discussion related to IDRs.