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Segment Information - Summary of Company's Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Net sales
Net sales	$ 87,869	$ 99,981	$ 173,659	$ 189,906
Income taxes
Income taxes	786	2,526	982	3,925
Net income
Net income	3,680	5,080	3,424	7,818
ASSETS
Assets	345,044		345,044		$ 353,967
Operating Segments [Member] | PLP-USA [Member]
Net sales
Net sales	34,540	35,336	66,497	66,022
Income taxes
Income taxes	1,404	2,085	1,471	2,924
Net income
Net income	2,868	3,123	2,046	4,125
ASSETS
Assets	100,574		100,574		99,850
Operating Segments [Member] | The Americas [Member]
Net sales
Net sales	18,399	25,356	34,548	48,590
Income taxes
Income taxes	132	355	(243)	669
Net income
Net income	427	1,178	(173)	2,508
ASSETS
Assets	80,437		80,437		85,017
Operating Segments [Member] | EMEA [Member]
Net sales
Net sales	12,811	15,497	27,007	29,723
Income taxes
Income taxes	206	479	734	817
Net income
Net income	570	1,115	2,369	1,968
ASSETS
Assets	51,957		51,957		51,691
Operating Segments [Member] | Asia-Pacific [Member]
Net sales
Net sales	22,119	23,792	45,607	45,571
Income taxes
Income taxes	(956)	(393)	(980)	(485)
Net income
Net income	(185)	(336)	(818)	(783)
ASSETS
Assets	111,761		111,761		117,093
Segment Reconciling Items [Member]
Net sales
Net sales	87,869	99,981	173,659	189,906
Income taxes
Income taxes	786	2,526	982	3,925
Net income
Net income	3,680	5,080	3,424	7,818
ASSETS
Assets	344,729		344,729		353,651
Intersegment Eliminations [Member]
Intersegment sales
Intersegment sales	5,671	7,410	12,192	14,060
Intersegment Eliminations [Member] | PLP-USA [Member]
Intersegment sales
Intersegment sales	2,082	3,210	4,900	5,935
Intersegment Eliminations [Member] | The Americas [Member]
Intersegment sales
Intersegment sales	1,328	1,271	2,716	2,636
Intersegment Eliminations [Member] | EMEA [Member]
Intersegment sales
Intersegment sales	219	368	642	730
Intersegment Eliminations [Member] | Asia-Pacific [Member]
Intersegment sales
Intersegment sales	2,042	$ 2,561	3,934	$ 4,759
Corporate, Non-Segment [Member]
ASSETS
Assets	$ 315		$ 315		$ 316

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