Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

During the years ended December 31, 2013, 2012 and 2011, our allowance for doubtful accounts was as follows (amounts in thousands):

	2013			2012			2011
Balance, beginning of period	$	6,987		$	7,700		$	6,580
Provision for losses	5,152			4,860			4,156
Write-offs	(4,212		)	(5,573		)	(3,036		)
Balance, end of period	$	7,927		$	6,987		$	7,700

Estimated Amortization of Identified Intangible Assets for Next Five Years

Estimated amortization of identified intangible assets for each of the next five years are as follows (amounts in thousands):

Year ending December 31,	Amount
2014	$	349
2015	349
2016	251
2017	87
2018	87