INVENTORIES (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Total inventories, net of reserves [Abstract]
Raw materials	$ 4,917,399us-gaap_InventoryRawMaterials	$ 3,581,418us-gaap_InventoryRawMaterials
Work-in-process	6,292,679us-gaap_InventoryWorkInProcess	10,291,124us-gaap_InventoryWorkInProcess
Finished goods	27,985,067us-gaap_InventoryFinishedGoods	28,771,098us-gaap_InventoryFinishedGoods
Finished goods on consignment	677,484	407,462
Less inventory reserves	(934,000)us-gaap_InventoryValuationReserves	(639,000)us-gaap_InventoryValuationReserves
Total	38,938,629cthr_InventoryNetCurrentAndNoncurrent	42,412,102cthr_InventoryNetCurrentAndNoncurrent
Short-term portion	13,320,639us-gaap_InventoryNet	13,074,428us-gaap_InventoryNet
Long-term portion	25,617,990us-gaap_InventoryNoncurrent	29,337,674us-gaap_InventoryNoncurrent
Shrinkage reserve for finished goods on consignment	53,000	75,000
Inventory of net loose jewels	31,950,000cthr_InventoryOfNetLooseJewels	32,870,000cthr_InventoryOfNetLooseJewels
Inventory reserve for shrinkage of loose jewels	17,000	2,000
Inventory reserve for shrinkage of loose jewels on consignment	17,000	0
Inventory reserve for recuts	216,000cthr_InventoryReserveForRecuts	172,000cthr_InventoryReserveForRecuts
Inventory of net jewelry	6,930,000cthr_InventoryOfNetJewelry	9,450,000cthr_InventoryOfNetJewelry
Inventory reserve for shrinkage of finished jewelry	192,000	180,000
Inventory reserve for shrinkage of finished jewelry on consignment	36,000	75,000
Scrap reserve	101,000cthr_ScrapReserve	106,000cthr_ScrapReserve
Inventory reserve for jewelry in need of repair	127,000	51,000
Inventory reserve for obsolescence	250,000us-gaap_InventoryAdjustments	128,000us-gaap_InventoryAdjustments
Carrying value of inventory reserve for obsolescence of moissanite	$ 31,000

Represents the inventory net of reserves current and noncurrent portion.

No definition available.

Name:	cthr_InventoryNetCurrentAndNoncurrent
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the inventory of net jewelry.

+ References

No definition available.

+ Details

Name:	cthr_InventoryOfNetJewelry
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the inventory of net loose jewels.

+ References

No definition available.

+ Details

Name:	cthr_InventoryOfNetLooseJewels
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the inventory reserve for jewelry in need of repair.

+ References

No definition available.

+ Details

Name:	cthr_InventoryReserveForJewelryInNeedOfRepair
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the inventory reserve for recuts or the projected material loss resulting from the re-cutting of damaged jewels into smaller loose jewels to remove the damage.

+ References

No definition available.

+ Details

Name:	cthr_InventoryReserveForRecuts
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the inventory reserve for shrinkage of finished Jewelry on review with prospective customers and vendors that may not be returned to the entity.

+ References

No definition available.

+ Details

Name:	cthr_InventoryReserveForShrinkageOfFinishedJewelry
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the inventory reserve for shrinkage of Finished jewelry on consignment with a review with prospective customers and vendors that may not be returned to the entity.

+ References

No definition available.

+ Details

Name:	cthr_InventoryReserveForShrinkageOfFinishedJewelryOnConsignment
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the inventory reserve for shrinkage of loose jewels or jewels on review with prospective customers and vendors that may not be returned to the entity.

+ References

No definition available.

+ Details

Name:	cthr_InventoryReserveForShrinkageOfLooseJewels
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the inventory reserve for shrinkage of loose jewels or jewels on consignment with a review with prospective customers and vendors that may not be returned to the entity.

+ References

No definition available.

+ Details

Name:	cthr_InventoryReserveForShrinkageOfLooseJewelsOnConsignment
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the reserve established for obsolescence of finished jewelry featuring moissanite.

+ References

No definition available.

+ Details

Name:	cthr_ReserveEstablishedForObsolescenceOfFinishedJewelryFeaturingMoissanite
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

An inventory reserve to reduce certain jewelry inventories to the amount the entity would expect to obtain by melting the gold in the jewelry and returning to loose-jewel finished goods inventory those jewels that meet grading standards.

+ References

No definition available.

+ Details

Name:	cthr_ScrapReserve
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the shrinkage reserve for finished goods on consignment.

+ References

No definition available.

+ Details

Name:	cthr_ShrinkageReserveForFinishedGoodsOnConsignment
Namespace Prefix:	cthr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Certain changes made in the current period to the value and amount of inventory reported.

+ References

+ Details

Name:	us-gaap_InventoryAdjustments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_InventoryFinishedGoods
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

+ Details

Name:	us-gaap_InventoryNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_InventoryNetItemsNetOfReserveAlternativeAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle.

+ References

+ Details

Name:	us-gaap_InventoryNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(4))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_InventoryRawMaterials
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of valuation reserve for inventory.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-Subparagraph (SX 210.12-09)

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.BB)

-URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100047-122729

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

+ Details

Name:	us-gaap_InventoryValuationReserves
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(3))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_InventoryWorkInProcess
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Gross amount of inventory owned by the entity but in the hands of a customer, typically a reseller.

+ References

+ Details

Name:	us-gaap_OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant