Shareholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011 Acquisition	Dec. 31, 2013 Common Stock [Member]	Dec. 31, 2011 Common Stock [Member]	Dec. 31, 2013 Common Stock [Member] Insignificant Acquisitions [Member]	Dec. 31, 2012 Common Stock [Member] Insignificant Acquisitions [Member]	Dec. 31, 2011 Common Stock [Member] Insignificant Acquisitions [Member]	Dec. 31, 2010 Common Stock [Member] Insignificant Acquisitions [Member]	Dec. 31, 2012 Restricted Stock [Member] Insignificant Acquisitions [Member]
Class of Stock [Line Items]
Common stock issued during the period (in shares)							40,225	1,356,917	6,044,898	974,701	505,038
Common stock subscribed and issued (in shares)						53,574	400,000		175,866
Common stock subscribed and cancelled (in shares)							122,292
Common stock cancelled share price (in dollars per share)							$ 6.95
Indemnification asset settled							$ 2,194
General and Administrative Expense		34,689	42,366	32,579			1,345
Acquisition related costs			1,383
Trading Restriction Period			1 year	1 year
Amount of common stock issued for acquisitions		(726)	5,202	34,802	885		124	5,202	34,802	3,147	1,827
Partial consideration for insignificant acquisition				373
Number of insignificant acquisitions completed				3
Ownership interest in subsidiary (in hundredths)				63.00%
Noncontrolling interest				478
Noncontrolling interest based on a percentage of fair value of assets of less than wholly owned subsidiaries (in hundredths)				37.00%
Stock issued for charitable contribution (in shares)				485,232
Stock issued for charitable contribution				1,851
Redemption and retirement of preferred stock	41,750	0	0	41,750
Preferred stock dividends paid	7,328			7,328
Preferred stock dividends		$ 0	$ 0	$ 3,153