Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Summary Of Activity Recorded Within The Allowance For Doubtful Accounts

The following table summarizes activity recorded within the allowance for doubtful accounts balances for the years ended December 31 (in thousands):

	2016			2015			2014
Beginning balance	$	4,868		$	4,280		$	4,774
Bad debt expense	2,519			1,404			1,095
Accounts written off and other adjustments	(2,115		)	(816		)	(1,589		)
Ending balance	$	5,272		$	4,868		$	4,280

Summary Of Interest Capitalized And Depreciation Expense

The table below sets forth the amount of interest capitalized and depreciation expense recognized during the years ended December 31 (in thousands):

	2016		2015		2014
Capitalized interest	$	138	$	166	$	420
Depreciation expense	$	14,477	$	17,869	$	19,712