Noncontrolling interest (Tables)

9 Months Ended

Sep. 30, 2013

Noncontrolling Interest [Abstract]

Summary of Activity of Noncontrolling Interest-Redeemable

The following table summarizes the activity of noncontrolling interest-redeemable for the nine months ended September 30, 2013 (amounts in thousands):

Balance as of December 31, 2012	$	11,426
Net income attributable to noncontrolling interest-redeemable		4,241
Noncontrolling interest-redeemable distributions		(5,538	)
Transfer of noncontrolling interest		1,342
Acquired noncontrolling interest (1)		608
Purchase of additional controlling interest		(612	)
Balance as of September 30, 2013	$	11,467

(1) The noncontrolling interest balance at December 31, 2012 included a preliminary fair value of the noncontrolling interest acquired in 2012. The valuation was finalized and recorded during the nine months ended September 30, 2013.