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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 15

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 17

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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- Definition

Amount of depreciation, depletion, and amortization expense for the reportable segment. Such disclosure is presented if the amount is: (a) is included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

No definition available.

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- Definition

Amount of net assets (total assets less total liabilities) attributed to the reportable segment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Business Segment Data (Annual and Quarter) (Detail) - Company`s Segment Assets and Other Disclosure (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011	Dec. 31, 2010
Assets			$ 27,459	$ 33,442
Depreciation and amortization			4,615	5,303
Capital expenditures			472	1,425
Geographic revenues:
Revenues	5,623	4,917	23,849	24,307
Identifiable Assets [Member] \| Digital Display Sales [Member]
Assets			7,460	8,875
Identifiable Assets [Member] \| Digital Display Lease and Maintenance [Member]
Assets			17,386	22,394
Identifiable Assets [Member] \| Real Estate Rentals [Member]
Assets			802	849
Identifiable Assets [Member] \| Segment, Discontinued Operations [Member]
Assets			702	926
Identifiable Assets [Member]
Assets			26,350	33,044
United States [Member]
Geographic revenues:
Revenues			21,630	21,578
Canada [Member]
Geographic revenues:
Revenues			1,619	1,769
Eleswhere [Member]
Geographic revenues:
Revenues			600	960
Digital Display Sales [Member]
Depreciation and amortization			179	187
Capital expenditures			37	85
Geographic revenues:
Revenues	3,837	2,848	15,990	15,515
Digital Display Lease and Maintenance [Member]
Depreciation and amortization			4,302	4,945
Capital expenditures			430	1,329
Geographic revenues:
Revenues	1,768	2,046	7,767	8,561
Real Estate Rentals [Member]
Depreciation and amortization			68	43
Geographic revenues:
Revenues	18	23	92	231
General Corporate [Member]
Assets			1,109	398
Depreciation and amortization			66	128
Capital expenditures			$ 5	$ 11