Selected Quarterly Financial Data (Unaudited) - Restated Consolidated Statement of Net Income (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended															6 Months Ended				9 Months Ended				12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016		Jun. 30, 2016		Mar. 31, 2016		Dec. 31, 2015	[1]	Sep. 30, 2015		Jun. 30, 2015		Mar. 31, 2015		Jun. 30, 2016		Jun. 30, 2015		Sep. 30, 2016		Sep. 30, 2015		Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Income Statement [Abstract]
Net patient revenues	$ 88,946	$ 86,411	[1]	$ 88,433	[1]	$ 85,049	[1]	$ 84,881		$ 82,154	[1]	$ 81,451	[1]	$ 75,807	[1]	$ 173,482	[1]	$ 157,258	[1]	$ 259,893	[1]	$ 239,412	[1]	$ 348,839	$ 324,293	[1]	$ 299,009	[1]
Other revenues		1,933	[1]	1,997	[1]	1,859	[1]			1,895	[1]	1,837	[1]	1,434	[1]	3,856	[1]	3,271	[1]	5,789	[1]	5,166	[1]	7,707	7,009	[1]	6,065	[1]
Net revenues	90,864	88,344	[1]	90,430	[1]	86,908	[1]	86,724		84,049	[1]	83,288	[1]	77,241	[1]	177,338	[1]	160,529	[1]	265,682	[1]	244,578	[1]	356,546	331,302	[1]	305,074	[1]
Clinic operating costs [Abstract]
Salaries and related costs		49,868	[1]	48,837	[1]	47,804	[1]			46,594	[1]	44,398	[1]	43,052	[1]	96,641	[1]	87,450	[1]	146,509	[1]	134,044	[1]	198,495	180,514	[1]	163,417	[1]
Rent, clinic supplies, contract labor and other		17,885	[1]	17,546	[1]	17,507	[1]			17,428	[1]	16,681	[1]	16,325	[1]	35,053	[1]	33,006	[1]	52,938	[1]	50,434	[1]	71,868	68,046	[1]	61,209	[1]
Provision for doubtful accounts		917	[1]	956	[1]	1,089	[1]			1,067	[1]	1,062	[1]	990	[1]	2,045	[1]	2,052	[1]	2,962	[1]	3,119	[1]	4,040	4,170	[1]	4,112	[1]
Closure costs		9	[1]	32	[1]	13	[1]			88	[1]	5	[1]	32	[1]	45	[1]	37	[1]	54	[1]	125	[1]	131	211	[1]	169	[1]
Total clinic operating costs		68,679	[1]	67,371	[1]	66,413	[1]			65,177	[1]	62,146	[1]	60,399	[1]	133,784	[1]	122,545	[1]	202,463	[1]	187,722	[1]	274,534	252,941	[1]	228,907	[1]
Gross margin		19,665	[1]	23,059	[1]	20,495	[1]			18,872	[1]	21,142	[1]	16,842	[1]	43,554	[1]	37,984	[1]	63,219	[1]	56,856	[1]	82,012	78,361	[1]	76,167	[1]
Corporate office costs		7,610	[1]	8,026	[1]	9,004	[1]			6,923	[1]	7,593	[1]	7,657	[1]	17,030	[1]	15,250	[1]	24,640	[1]	22,173	[1]	32,479	31,067	[1]	30,399	[1]
Operating income	$ 10,954	12,055	[1]	15,033	[1]	11,491	[1]	$ 12,611		11,949	[1]	13,549	[1]	9,185	[1]	26,524	[1]	22,734	[1]	38,579	[1]	34,683	[1]	49,533	47,294	[1]	45,768	[1]
Interest and other income, net		21	[1]	21	[1]	20	[1]			24	[1]	16	[1]	8	[1]	41	[1]	24	[1]	62	[1]	48	[1]	93	81	[1]	18	[1]
Interest expense [Abstract]
Mandatorily redeemable non-controlling interests - change in redemption value		(1,934)	[1]	(1,931)	[1]	(2,191)	[1]			(501)	[1]	48	[1]	(244)	[1]	(4,122)	[1]	(196)	[1]	(6,056)	[1]	(697)	[1]	(6,169)	(2,670)	[1],[2]	(2,978)	[1],[2]
Mandatorily redeemable non-controlling interests - earnings allocable		(929)	[1]	(1,330)	[1]	(887)	[1]			(778)	[1]	(1,190)	[1]	(706)	[1]	(2,217)	[1]	(1,896)	[1]	(3,146)	[1]	(2,674)	[1]	(4,057)	(3,538)	[1],[2]	(3,388)	[1],[2]
Debt and other		(326)	[1]	(320)	[1]	(308)	[1]			(255)	[1]	(245)	[1]	(265)	[1]	(628)	[1]	(510)	[1]	(954)	[1]	(765)	[1]	(1,252)	(1,031)	[1]	(1,088)	[1]
Total interest expense		(3,189)	[1]	(3,581)	[1]	(3,386)	[1]			(1,534)	[1]	(1,387)	[1]	(1,215)	[1]	(6,967)	[1]	(2,602)	[1]	(10,156)	[1]	(4,136)	[1]	(11,478)	(7,239)	[1]	(7,454)	[1]
Income before taxes		8,887	[1]	11,473	[1]	8,125	[1]			10,439	[1]	12,178	[1]	7,978	[1]	19,598	[1]	20,156	[1]	28,485	[1]	30,595	[1]	38,148	40,136	[1]	38,332	[1]
Provision for income taxes		2,753	[1]	3,802	[1]	2,172	[1]			3,465	[1]	4,221	[1]	2,685	[1]	5,974	[1]	6,906	[1]	8,727	[1]	10,371	[1]	11,880	13,647	[1]	13,018	[1]
Net income		6,134	[1]	7,671	[1]	5,953	[1]			6,974	[1]	7,957	[1]	5,293	[1]	13,624	[1]	13,250	[1]	19,758	[1]	20,224	[1]	26,268	26,489	[1]	25,314	[1]
Less: net income attributable to non-controlling interests		(1,330)	[1]	(1,659)	[1]	(1,465)	[1]			(1,468)	[1]	(1,623)	[1]	(1,279)	[1]	(3,124)	[1]	(2,902)	[1]	(4,454)	[1]	(4,370)	[1]	(5,717)	(5,874)	[1]	(6,183)	[1]
Net income attributable to USPH shareholders		$ 4,804	[1]	$ 6,012	[1]	$ 4,488	[1]			$ 5,506	[1]	$ 6,334	[1]	$ 4,014	[1]	$ 10,500	[1]	$ 10,348	[1]	$ 15,304	[1]	$ 15,854	[1]	$ 20,551	$ 20,615	[1]	$ 19,131	[1]
Basic and diluted earnings per share attributable to USPH shareholders (in dollars per share)	$ 0.42	$ 0.38	[1]	$ 0.48	[1]	$ 0.36	[1]	$ 0.38		$ 0.44	[1]	$ 0.51	[1]	$ 0.33	[1]	$ 0.84	[1]	$ 0.84	[1]	$ 1.22	[1]	$ 1.28	[1]	$ 1.64	$ 1.66	[1]	$ 1.57	[1]
Shares used in computation - basic (in shares)		12,520	[1]	12,511	[1]	12,448	[1]			12,421	[1]	12,409	[1]	12,313	[1]	12,480	[1]	12,362	[1]	12,494	[1]	12,382	[1]	12,500	12,392	[1]	12,217	[1]
Shares used in computation - diluted (in shares)		12,520	[1]	12,511	[1]	12,448	[1]			12,421	[1]	12,409	[1]	12,313	[1]	12,480	[1]	12,362	[1]	12,494	[1]	12,382	[1]	12,500	12,392	[1]	12,221	[1]
Dividends declared per common share (in dollars per share)		$ 0.17	[1]	$ 0.17	[1]	$ 0.17	[1]			$ 0.15	[1]	$ 0.15	[1]	$ 0.15	[1]	$ 0.34	[1]	$ 0.30	[1]	$ 0.51	[1]	$ 0.45	[1]	$ 0.68	$ 0.60	[1]	$ 0.48	[1]
As Reported [Member]
Income Statement [Abstract]
Net patient revenues		$ 86,411		$ 88,433		$ 85,049				$ 82,154		$ 81,451		$ 75,807		$ 173,482		$ 157,258		$ 259,893		$ 239,412
Other revenues		1,933		1,997		1,859				1,895		1,837		1,434		3,856		3,271		5,789		5,166
Net revenues		88,344		90,430		86,908				84,049		83,288		77,241		177,338		160,529		265,682		244,578
Clinic operating costs [Abstract]
Salaries and related costs		49,868		48,837		47,804				46,594		44,398		43,052		96,641		87,450		146,509		134,044
Rent, clinic supplies, contract labor and other		17,885		17,546		17,507				17,428		16,681		16,325		35,053		33,006		52,938		50,434
Provision for doubtful accounts		917		956		1,089				1,067		1,062		990		2,045		2,052		2,962		3,119
Closure costs		9		32		13				88		5		32		45		37		54		125
Total clinic operating costs		68,679		67,371		66,413				65,177		62,146		60,399		133,784		122,545		202,463		187,722
Gross margin		19,665		23,059		20,495				18,872		21,142		16,842		43,554		37,984		63,219		56,856
Corporate office costs		7,610		8,026		9,004				6,923		7,593		7,657		17,030		15,250		24,640		22,173
Operating income		12,055		15,033		11,491				11,949		13,549		9,185		26,524		22,734		38,579		34,683
Interest and other income, net		21		21		20				24		16		8		41		24		62		48
Interest expense [Abstract]
Mandatorily redeemable non-controlling interests - change in redemption value		0		0		0				0		0		0		0		0		0		0			$ 0	[2]	$ 0	[2]
Mandatorily redeemable non-controlling interests - earnings allocable		0		0		0				0		0		0		0		0		0		0			0	[2]	0	[2]
Debt and other		(326)		(320)		(308)				(255)		(245)		(265)		(628)		(510)		(954)		(765)
Total interest expense		(326)		(320)		(308)				(255)		(245)		(265)		(628)		(510)		(954)		(765)			(1,031)		(1,088)
Income before taxes		11,750		14,734		11,203				11,718		13,320		8,928		25,937		22,248		37,687		33,966			46,344		44,698
Provision for income taxes		3,778		4,674		3,523				3,654		4,203		2,777		8,197		6,980		11,975		10,634			14,653		14,274
Net income		7,972		10,060		7,680				8,064		9,117		6,151		17,740		15,268		25,712		23,332			31,691		30,424
Less: net income attributable to non-controlling interests		(2,259)		(2,989)		(2,352)				(2,246)		(2,813)		(1,985)		(5,341)		(4,798)		(7,600)		(7,044)			(9,412)		(9,571)
Net income attributable to USPH shareholders		$ 5,713		$ 7,071		$ 5,328				$ 5,818		$ 6,304		$ 4,166		$ 12,399		$ 10,470		$ 18,112		$ 16,288			$ 22,279		$ 20,853
Basic and diluted earnings per share attributable to USPH shareholders (in dollars per share)		$ 0.46		$ 0.57		$ 0.43				$ 0.47		$ 0.48		$ 0.34		$ 0.99		$ 0.82		$ 1.45		$ 1.29			$ 1.77		$ 1.62
Shares used in computation - basic (in shares)		12,520		12,511		12,448				12,421		12,409		12,313		12,480		12,362		12,494		12,382
Shares used in computation - diluted (in shares)		12,520		12,511		12,448				12,421		12,409		12,313		12,480		12,362		12,494		12,382
Dividends declared per common share (in dollars per share)		$ 0.17		$ 0.17		$ 0.17				$ 0.15		$ 0.15		$ 0.15		$ 0.34		$ 0.30		$ 0.51		$ 0.45
Adjustment [Member]
Income Statement [Abstract]
Net patient revenues		$ 0		$ 0		$ 0				$ 0		$ 0		$ 0		$ 0		$ 0		$ 0		$ 0
Other revenues		0		0		0				0		0		0		0		0		0		0
Net revenues		0		0		0				0		0		0		0		0		0		0
Clinic operating costs [Abstract]
Salaries and related costs		0		0		0				0		0		0		0		0		0		0
Rent, clinic supplies, contract labor and other		0		0		0				0		0		0		0		0		0		0
Provision for doubtful accounts		0		0		0				0		0		0		0		0		0		0
Closure costs		0		0		0				0		0		0		0		0		0		0
Total clinic operating costs		0		0		0				0		0		0		0		0		0		0
Gross margin		0		0		0				0		0		0		0		0		0		0
Corporate office costs		0		0		0				0		0		0		0		0		0		0
Operating income		0		0		0				0		0		0		0		0		0		0
Interest and other income, net		0		0		0				0		0		0		0		0		0		0
Interest expense [Abstract]
Mandatorily redeemable non-controlling interests - change in redemption value		(1,934)		(1,931)		(2,191)				(501)		48		(244)		(4,122)		(196)		(6,056)		(697)			$ (2,670)	[2]	$ (2,978)	[2]
Mandatorily redeemable non-controlling interests - earnings allocable		(929)		(1,330)		(887)				(778)		(1,190)		(706)		(2,217)		(1,896)		(3,146)		(2,674)			(3,538)	[2]	(3,388)	[2]
Debt and other		0		0		0				0		0		0		0		0		0		0
Total interest expense		(2,863)		(3,261)		(3,078)				(1,279)		(1,142)		(950)		(6,339)		(2,092)		(9,202)		(3,371)			(6,208)		(6,366)
Income before taxes		(2,863)		(3,261)		(3,078)				(1,279)		(1,142)		(950)		(6,339)		(2,092)		(9,202)		(3,371)			(6,208)		(6,366)
Provision for income taxes		(1,025)		(872)		(1,351)				(189)		18		(92)		(2,223)		(74)		(3,248)		(263)			(1,006)		(1,256)
Net income		(1,838)		(2,389)		(1,727)				(1,090)		(1,160)		(858)		(4,116)		(2,018)		(5,954)		(3,108)			(5,202)		(5,110)
Less: net income attributable to non-controlling interests		929		1,330		887				778		1,190		706		2,217		1,896		3,146		2,674			3,538		3,388
Net income attributable to USPH shareholders		$ (909)		$ (1,059)		$ (840)				$ (312)		$ 30		$ (152)		$ (1,899)		$ (122)		$ (2,808)		$ (434)			$ (1,664)		$ (1,722)
Basic and diluted earnings per share attributable to USPH shareholders (in dollars per share)		$ (0.08)		$ (0.09)		$ (0.07)				$ (0.03)		$ 0.03		$ (0.01)		$ (0.15)		$ 0.02		$ (0.23)		$ (0.01)			$ (0.11)		$ (0.05)

[1] as restated

[2] Mandatorily redeemable non-controlling interests