CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Total Merge Shareholders' Equity [Member]	Noncontrolling Interest [Member]
Balance at Dec. 31, 2008	$ 8,841	$ 0	$ 555	$ 465,083	$ (458,641)	$ 1,807	$ 8,841	$ 0
Balance, common stock subscribed at Dec. 31, 2008			37
Balance, preferred stock issued (in shares) at Dec. 31, 2008		1
Balance, common stock subscribed (in shares) at Dec. 31, 2008			30,271
Balance, common stock issued (in shares) at Dec. 31, 2008			55,506,702
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of exchangeable share rights into Common Stock (in shares)			719,412
Exchange of exchangeable share rights into Common Stock	0	0	7	(7)	0	0	0	0
Retirement of preferred share (in shares)		(1)
Retirement of preferred share	0	0	0	0	0	0	0	0
Stock issued for acquisitions, common stock issued (in shares)			9,364,849
Stock issued for acquisitions	32,248	0	93	32,155	0	0	32,248	0
Stock issued under registered direct offering, net of issuance costs (in shares)			9,084,032
Stock issued under registered direct offering, net of issuance costs	25,175	0	91	25,084	0	0	25,175	0
Stock issued under ESPP	110	0	1	114	0	0	110	0
Stock issued under ESPP, common stock issued (in shares)			63,425
Stock issued under ESPP, common stock subscribed			(5)
Stock issued under ESPP, common stock subscribed (in shares)			(20,293)
Vesting of restricted stock (in shares)			53,333
Vesting of restricted stock	0	0	1	(1)	0	0	0	0
Share-based compensation expense	1,686	0	0	1,686	0	0	1,686	0
Net income (loss)	285	0	0	0	285	0	285	0
Other comprehensive income (loss)	(208)	0	0	0	0	(208)	(208)	0
Balance, common stock subscribed at Dec. 31, 2009			32
Balance at Dec. 31, 2009	68,137	0	748	524,114	(458,356)	1,599	68,137	0
Balance, common stock issued (in shares) at Dec. 31, 2009			74,791,753
Balance, common stock subscribed (in shares) at Dec. 31, 2009			9,978
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for acquisitions, common stock issued (in shares)			500,000
Stock issued for acquisitions, common stock subscribed			3,265
Stock issued for acquisitions, common stock subscribed (in shares)			974,701
Stock issued for acquisitions	4,615	0	5	1,345	0	0	4,615	0
Stock issued under ESPP	160	0	1	133	0	0	160	0
Stock issued under ESPP, common stock issued (in shares)			51,388
Stock issued under ESPP, common stock subscribed			26
Stock issued under ESPP, common stock subscribed (in shares)			6,374
Vesting of restricted stock (in shares)			408,531
Vesting of restricted stock	0	0	4	(4)	0	0	0	0
Share-based compensation expense	2,623	0	0	2,623	0	0	2,623	0
Treasury stock repurchase and retirement (in shares)			(8,549)
Treasury stock repurchase and retirement	(26)	0	0	(26)	0	0	(26)	0
Net income (loss)	(11,516)	0	0	0	(11,516)	0	(11,516)	0
Other comprehensive income (loss)	(55)	0	0	0	0	(55)	(55)	0
Issuance of stock (in shares)		41,750	7,515,000
Issuance of stock	41,750	26,850	75	14,825	0	0	41,750	0
Deemed dividend	0	14,900	0	(14,900)	0	0	0	0
Stock issuance costs	(882)	0	0	(882)	0	0	(882)	0
Balance, common stock subscribed at Dec. 31, 2010			3,323
Balance at Dec. 31, 2010	104,806	41,750	833	527,228	(469,872)	1,544	104,806	0
Balance, preferred stock issued (in shares) at Dec. 31, 2010		41,750
Balance, common stock issued (in shares) at Dec. 31, 2010	83,258,123		83,258,123
Balance, common stock subscribed (in shares) at Dec. 31, 2010	991,053		991,053
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for acquisitions, common stock issued (in shares)			6,843,733
Stock issued for acquisitions, common stock subscribed			(2,043)
Stock issued for acquisitions, common stock subscribed (in shares)			(798,835)
Stock issued for acquisitions	34,802	0	68	36,777	0	0	34,802	0
Stock issued under ESPP	294	0	0	263	0	0	294	0
Stock issued under ESPP, common stock issued (in shares)			56,465
Stock issued under ESPP, common stock subscribed			31
Stock issued under ESPP, common stock subscribed (in shares)			2,898
Exercise of stock options, common stock issued (in shares)			295,500
Exercise of stock options	872	0	3	869	0	0	872	0
Share-based compensation expense	3,908	0	0	3,908	0	0	3,908	0
Preferred stock dividends paid	(7,328)	0	0	(7,328)	0	0	(7,328)	0
Net income (loss)	(5,531)	0	0	0	(5,521)	0	(5,521)	(10)
Other comprehensive income (loss)	69	0	0	0	0	69	69	0
Noncontrolling interest acquired	478	0	0	0	0	0	0	478
Redemption and cancellation of Series A Preferred Stock (in shares)		(41,750)
Redemption and cancellation of Series A Preferred Stock	(41,750)	(41,750)	0		0	0	(41,750)	0
Stock issued for charitable contribution (in shares)			485,232
Stock issued for charitable contribution	1,851	0	5	1,846	0	0	1,851	0
Balance, common stock subscribed at Dec. 31, 2011			1,311
Balance at Dec. 31, 2011	$ 92,471	$ 0	$ 909	$ 563,563	$ (475,393)	$ 1,613	$ 92,003	$ 468
Balance, common stock issued (in shares) at Dec. 31, 2011	90,939,053		90,939,053
Balance, common stock subscribed (in shares) at Dec. 31, 2011	195,116		195,116