ACQUISITIONS (Details) (USD $)	3 Months Ended		9 Months Ended			9 Months Ended			3 Months Ended			9 Months Ended		3 Months Ended		9 Months Ended		0 Months Ended				0 Months Ended			0 Months Ended						9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 Trademarks [Member]	Sep. 30, 2014 Technology [Member]	Sep. 30, 2014 Customer Relationships [Member]	Mar. 31, 2014 Acquisition Date Fair Values (As adjusted) [Member]	Sep. 30, 2014 Class A [Member]	Sep. 30, 2013 Class A [Member]	Sep. 30, 2014 Class A [Member]	Sep. 30, 2013 Class A [Member]	Sep. 30, 2014 Class B [Member]	Sep. 30, 2013 Class B [Member]	Sep. 30, 2014 Class B [Member]	Sep. 30, 2013 Class B [Member]	Jun. 19, 2014 Power Solutions [Member]	Jun. 19, 2014 Power Solutions [Member]	Jun. 19, 2014 Power Solutions [Member] Measurement Period Adjustments [Member]	Jun. 19, 2014 Power Solutions [Member] Measurement Period Adjustments [Member]	Jun. 19, 2014 Power Solutions [Member] Acquisition Date Fair Values (As adjusted) [Member]	Jun. 19, 2014 Power Solutions [Member] Acquisition Date Fair Values (As adjusted) [Member]		Mar. 29, 2013 TRP [Member]	Mar. 29, 2013 TRP [Member] Acquisition Date Fair Values [Member]	Mar. 29, 2013 TRP [Member] Measurement Period Adjustments [Member]	Aug. 20, 2013 Array [Member]	Aug. 20, 2013 Array [Member] Acquisition Date Fair Values [Member]	Aug. 20, 2013 Array [Member] Measurement Period Adjustments [Member]	Sep. 30, 2014 Acquired Companies [Member] Acquisition Date Fair Values (As adjusted) [Member]	Sep. 30, 2014 2013 Acquired Companies [Member]	Sep. 30, 2013 2013 Acquired Companies [Member]	Sep. 30, 2014 2013 Acquired Companies [Member]	Sep. 30, 2013 2013 Acquired Companies [Member]	Sep. 30, 2014 2014 Acquired Companies [Member]	Sep. 30, 2013 2014 Acquired Companies [Member]	Sep. 30, 2014 2014 Acquired Companies [Member]	Sep. 30, 2013 2014 Acquired Companies [Member]	Sep. 30, 2014 2014 Acquired Companies [Member] Class A [Member]	Sep. 30, 2013 2014 Acquired Companies [Member] Class A [Member]	Sep. 30, 2014 2014 Acquired Companies [Member] Class A [Member]	Sep. 30, 2013 2014 Acquired Companies [Member] Class A [Member]	Sep. 30, 2014 2014 Acquired Companies [Member] Class B [Member]	Sep. 30, 2013 2014 Acquired Companies [Member] Class B [Member]	Sep. 30, 2014 2014 Acquired Companies [Member] Class B [Member]	Sep. 30, 2013 2014 Acquired Companies [Member] Class B [Member]	Aug. 29, 2014 Connectivity Solutions [Member]	Jul. 25, 2014 Connectivity Solutions [Member]		Jul. 25, 2014 Connectivity Solutions [Member]
Acquired assets and liabilities [Line Items]
Payment for acquisitions, net of cash acquired			$ 206,536,000	$ 30,931,000															$ 110,000,000						$ 21,000,000			$ 10,000,000																				$ 9,000,000	$ 90,700,000
Acquisition-related costs																																100,000	100,000	100,000	800,000	3,800,000		5,300,000
Percentages of owned joint venture investment (in hundredths)																																				49.00%		49.00%
Revenues	156,341,000	101,164,000	338,426,000	258,173,000																												20,700,000	26,400,000	58,300,000	48,600,000	63,100,000		70,300,000
Net earnings (loss)	1,507,000	7,380,000	7,075,000	8,511,000						255,000	1,340,000	1,238,000	1,528,000	1,252,000	6,040,000	5,837,000	6,983,000															4,000,000	4,200,000	8,900,000	7,400,000	(800,000)		(1,600,000)
Acquisition-related costs excluded from pro forma net earnings																																				3,900,000		5,400,000
Acquisition-related costs incurred but excluded from pro forma earnings during the period after tax																																				2,400,000		3,300,000
Nonrecurring expense related to fair value adjustments excluded from pro forma net earnings																																					4,600,000		4,600,000
Fair value adjustments excluded from pro form net earnings after tax																																					4,400,000		4,400,000
Assets acquired [Abstract]
Cash									8,388,000										20,913,000		0		20,913,000		8,388,000	8,388,000	0	0	0	0	27,457,000																				6,544,000	[1]
Accounts receivable									12,535,000										29,388,000		1,000		29,389,000		11,580,000	11,541,000	(39,000)	994,000	994,000	0	38,802,000																				9,413,000	[1]
Inventories									8,348,000										33,156,000		3,273,000		36,429,000	[2]	6,258,000	7,355,000	1,097,000	2,588,000	993,000	(1,595,000)	54,030,000					46,200,000		46,200,000													17,601,000	[1],[2]
Other current assets									2,047,000										5,387,000		13,697,000		19,084,000		1,953,000	1,619,000	(334,000)	83,000	428,000	345,000	21,718,000																				2,634,000	[1]
Property, plant and equipment									9,300,000										28,176,000		0		28,176,000	[3]	4,693,000	5,790,000	1,097,000	2,285,000	3,510,000	1,225,000	38,616,000																				10,440,000	[1],[3]
Intangible assets									7,580,000										21,188,000		(9,153,000)		12,035,000	[4]	0	6,110,000	6,110,000	0	1,470,000	1,470,000	58,540,000																				46,505,000	[1],[4]
Other assets									3,096,000										536,000		6,203,000		6,739,000	[5]	1,151,000	1,349,000	198,000	84,000	1,747,000	1,663,000	9,423,000																				2,684,000	[1]
Total identifiable assets									51,294,000										138,744,000		14,021,000		152,765,000		34,023,000	42,152,000	8,129,000	6,034,000	9,142,000	3,108,000	248,586,000																				95,821,000	[1]
Liabilities assumed [Abstract]
Accounts payable									(8,910,000)										(26,180,000)		0		(26,180,000)		(8,565,000)	(8,234,000)	331,000	(677,000)	(676,000)	1,000	(36,862,000)																				(10,682,000)	[1]
Accrued expenses									(4,750,000)										(20,290,000)		(4,505,000)		(24,795,000)	[5]	(4,003,000)	(4,465,000)	(462,000)	(206,000)	(285,000)	(79,000)	(29,729,000)																				(4,934,000)	[1]
Other current liabilities									(759,000)										223,000		0		223,000		(25,000)	(759,000)	(734,000)	(214,000)	0	214,000	166,000																				(57,000)	[1]
Noncurrent liabilities									(2,334,000)										761,000		(39,686,000)		(38,925,000)	[5]	0	(586,000)	(586,000)	(643,000)	(1,748,000)	(1,105,000)	(60,120,000)																				(21,195,000)	[1]
Total liabilities assumed									(16,753,000)										(45,486,000)		(44,191,000)		(89,677,000)		(12,593,000)	(14,044,000)	(1,451,000)	(1,740,000)	(2,709,000)	(969,000)	(126,545,000)																				(36,868,000)	[1]
Net identifiable assets acquired									34,541,000										93,258,000		(30,170,000)		63,088,000		21,430,000	28,108,000	6,678,000	4,294,000	6,433,000	2,139,000	122,041,000																				58,953,000	[1]
Goodwill	130,224,000		130,224,000		18,490,000				4,812,000										37,534,000		30,170,000		67,704,000	[6]	8,278,000	1,240,000	(7,038,000)	5,666,000	3,572,000	(2,094,000)	111,952,000																				44,248,000	[1],[6]
Net assets acquired									39,353,000										130,792,000		0		130,792,000		29,708,000	29,348,000	(360,000)	9,960,000	10,005,000	45,000	233,993,000																				103,201,000	[1]
Consideration transferred [Abstract]
Cash Paid									39,353,000									130,792,000		0		130,792,000			22,400,000	29,348,000	6,948,000	9,960,000	10,005,000	45,000	233,993,000																		103,201,000	[1]
Assumption of severance payment									0									0		0		0			109,000	0	(109,000)	0	0	0	0																		0	[1]
Fair value of consideration transferred									39,353,000									130,792,000		0		130,792,000			22,509,000	29,348,000	6,839,000	9,960,000	10,005,000	45,000	233,993,000																		103,201,000	[1]
Deferred consideration									0									0		0		0			7,199,000	0	(7,199,000)	0	0	0	0																		0	[1]
Total consideration paid									39,353,000									130,792,000		0		130,792,000			29,708,000	29,348,000	(360,000)	9,960,000	10,005,000	45,000	233,993,000																		103,201,000	[1]
Intangible assets with finite lives [Abstract]
Weighted Average Life							20 years	15 years
Acquisition-Date Fair Value			58,540,000			7,115,000	20,818,000	30,607,000
Unaudited Pro forma Consolidated Results of Operations [Abstract]
Revenue																																				163,040,000	185,091,000	480,482,000	533,605,000
Net earnings																																				$ 8,417,000	$ (28,213,000)	$ 6,388,000	$ (39,714,000)
Earnings per common share - basic and diluted (in dollars per share)																																								$ 0.68	$ (2.38)	$ 0.51	$ (3.36)	$ 0.72	$ (2.50)	$ 0.56	$ (3.51)

[1] The Company acquired the U.S. and U.K. entities of Connectivity Solutions on July 25, 2014 and the China entity of Connectivity Solutions on August 29, 2014. These values represent the estimated fair values as of the respective acquisition date.

[2] The inventory amounts noted above for both Power Solutions and Connectivity Solutions include preliminary adjustments to acquisition-date fair value.

[3] The appraisals related to machinery and equipment acquired were still in progress as of this filing date; however, the amount noted above for Connectivity Solutions includes preliminary adjustments to acquisition-date fair value. The amounts noted above for Power Solutions property, plant and equipment only include the carrying value of those assets on Power Solutions' balance sheet as of the acquisition date.

[4] The Company has identified certain intangible assets related to the Power Solutions acquisition, including trademarks and trade names, developed technology and potential in-process research and development, license agreements, non-compete agreements, an investment in a 49%-owned joint venture and customer relationships, which are being valued by a third-party appraiser. These appraisals were not complete as of the date of this filing. The Company has also identified certain intangible assets related to the Connectivity Solutions acquisition, including trademarks, developed technology and customer relationships, which are being valued by a third-party appraiser. While these appraisals were still in progress as of the date of this filing, preliminary estimated adjustments to fair value have been reflected in the table above.

[5] The Company recorded measurement period adjustments related to estimated uncertain tax provisions and other tax liabilities, including an indemnification asset related to certain liabilities. While these estimates were still in progress as of the date of this filing, preliminary estimated adjustments to these liabilities have been reflected in the table above.

[6] The amount of goodwill is provisional as of the filing date, as the fair value determination of inventory acquired, and appraisals related to property, plant and equipment, various intangible assets and certain liabilities such as lease liabilities are still underway. As the final amount of goodwill has not yet been determined or allocated by segment, the Company is unable to determine at this time the portion of goodwill, if any, that will be deductible for tax purposes.